To become a Medical Transcriptionist you will have to acquire knowledge of phonetics, medical terminology, various accent used in different countries, mainly US. The profession involves listening to recording and transcribing it into electronic text form and sending it back to the company from where it came. You will have to have computer, Internet connectivity, headphone etc. There are various companies who organize test for becoming transcriptionist and provide work also. You can search the web to get the addresses as it is not possible here to provide addresses of Private Companies.